BOSTON FBI agents zeroed in Wednesday on how
the Boston Marathon bombing was carried out - with kitchen pressure
cookers packed with explosives, nails and other lethal shrapnel - but
said they still didn't know who did it and why.
An intelligence bulletin issued to law enforcement and obtained by The Associated Press and the Reuters news agency late Tuesday included pictures of a mangled pressure cooker, a torn black bag, a circuit board and a battery connected to wires, all of which the bulletin said were from the two bombs used in the attack.
Both explosive devices appear to have been placed in metal
pressure cookers packed with nails and ball bearings designed to amplify
the damage from the explosions, CBS News correspondent Bob Orr reports.
Investigators believe the bombs were hidden in black nylon backpacks and housed inside the sealable metal pots called pressure cookers. Pressure cooker bombs can help boost the power of relatively small devices by briefly constraining the blast. And when the cookers do explode, they can add large chunks of metal to the shrapnel spray.
The IEDs have been popular with terrorists. Al Qaeda published a how-to recipe in an online Jihadi magazine. Several of the bombs were used in the 2006 attack on trains in Mumbai, India. Pressure cooker explosives have been recommended for lone-wolf operatives by al Qaeda's branch in Yemen.
The FBI and other law enforcement agencies repeatedly pleaded
for members of the public to come forward with photos, videos or
anything suspicious they might have seen or heard.
"The range of suspects and motives remains wide open," Richard DesLauriers, FBI agent in charge in Boston, said at a news conference Tuesday. He vowed to "go to the ends of the Earth to identify the subject or subjects who are responsible for this despicable crime."
Law enforcement sources told CBS News a Saudi Arabian man who
was being questioned by investigators is not considered a suspect at
this time, and it appears he was a spectator who was injured in the
attack.
President Obama branded the attack an act of terrorism but said officials don't know "whether it was planned and executed by a terrorist organization, foreign or domestic, or was the act of a malevolent individual."
Mr. Obama plans to attend an interfaith service Thursday in the victims' honor in Boston. He has traveled four times to cities reeling from mass violence, most recently in December after the schoolhouse shooting in Newtown, Conn.
SOURCE : http://www.cbsnews.com/8301-201_162-57579984/images-show-what-fbi-says-are-parts-of-boston-marathon-bombs/
An intelligence bulletin issued to law enforcement and obtained by The Associated Press and the Reuters news agency late Tuesday included pictures of a mangled pressure cooker, a torn black bag, a circuit board and a battery connected to wires, all of which the bulletin said were from the two bombs used in the attack.
Screen grab of Reuters video shows image the
news agency says was included in an FBI bulletin given to Reuters by an
unnamed federal official. The bulletin says the image is of evidence
gathered at scene of Boston Marathon bombings on April 15, 2013 and
shows what appears to be a piece of circuit board that could have been
part of one of the two bombs used in the attack. Blood can also be seen.
/
Reuters video
Investigators believe the bombs were hidden in black nylon backpacks and housed inside the sealable metal pots called pressure cookers. Pressure cooker bombs can help boost the power of relatively small devices by briefly constraining the blast. And when the cookers do explode, they can add large chunks of metal to the shrapnel spray.
The IEDs have been popular with terrorists. Al Qaeda published a how-to recipe in an online Jihadi magazine. Several of the bombs were used in the 2006 attack on trains in Mumbai, India. Pressure cooker explosives have been recommended for lone-wolf operatives by al Qaeda's branch in Yemen.
Screen grab of Reuters video shows what leaked
FBI bulletin says is what's left of battery and wires that could have
been part of one of the two devices
/
Reuters video
"The range of suspects and motives remains wide open," Richard DesLauriers, FBI agent in charge in Boston, said at a news conference Tuesday. He vowed to "go to the ends of the Earth to identify the subject or subjects who are responsible for this despicable crime."
Screen grab of Reuters video shows what leaked
FBI bulletin says is pressure cooker and black vinyl bag that were used
in the attack
/
Reuters video
President Obama branded the attack an act of terrorism but said officials don't know "whether it was planned and executed by a terrorist organization, foreign or domestic, or was the act of a malevolent individual."
Mr. Obama plans to attend an interfaith service Thursday in the victims' honor in Boston. He has traveled four times to cities reeling from mass violence, most recently in December after the schoolhouse shooting in Newtown, Conn.
SOURCE : http://www.cbsnews.com/8301-201_162-57579984/images-show-what-fbi-says-are-parts-of-boston-marathon-bombs/
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